Cantarella was a poison allegedly used by the Borgias during the papacy of Pope Alexander VI.
It may have been arsenic,[1] came in the shape of "a white powder with a pleasant taste",[2] and was sprinkled on food or in wine.
If it did exist, it left no trace in the works of contemporary writers.
[4][5] The word may also be related to kantharis (Ancient Greek: κάνθαρις), referring to the Spanish fly and other blister beetles that secrete cantharidin, a substance that is poisonous in large doses.
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